:root{--cdstl-dark:#151515;--cdstl-ink:#232526;--cdstl-muted:#565d60;--cdstl-accent:#3b7f8f;--cdstl-cream:#f3f8fa;--cdstl-line:#dbe7ea}.cdstl-page{color:var(--cdstl-ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;font-size:16px;line-height:1.7}.cdstl-page *{box-sizing:border-box}.cdstl-trust{align-items:center;background:var(--cdstl-dark);border-radius:8px;color:#fff;display:flex;flex-wrap:wrap;font-size:15px;font-weight:700;gap:8px 22px;justify-content:center;margin:0 0 28px;padding:14px 18px}.cdstl-trust span:before{color:#9dddeb;content:"\2713";font-weight:900;margin-right:8px}.cdstl-hero{background:linear-gradient(135deg,#101010 0%,#1f2a2e 62%,#347485 100%);border-radius:10px;color:#fff;display:grid;gap:30px;grid-template-columns:minmax(0,1.08fr) minmax(230px,.72fr);margin-bottom:28px;overflow:hidden;padding:36px 30px}.cdstl-badge{background:var(--cdstl-accent);border-radius:999px;color:#fff;display:inline-block;font-size:11px;font-weight:800;letter-spacing:1px;margin-bottom:14px;padding:7px 13px;text-transform:uppercase}.cdstl-hero h2{color:#fff;font-size:clamp(30px,5vw,42px);line-height:1.08;margin:0 0 16px}.cdstl-hero p{color:rgba(255,255,255,.86);margin:0 0 20px}.cdstl-photo{align-self:center;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);border-radius:10px;padding:12px}.cdstl-photo img{border-radius:8px;display:block;height:auto;width:100%}.cdstl-section{border-top:1px solid var(--cdstl-line);padding:34px 0}.cdstl-kicker{color:var(--cdstl-accent);font-size:12px;font-weight:800;letter-spacing:1.2px;margin-bottom:8px;text-transform:uppercase}.cdstl-section h3{font-size:clamp(22px,4vw,30px);line-height:1.2;margin:0 0 16px}.cdstl-grid{display:grid;gap:18px;grid-template-columns:repeat(3,minmax(0,1fr))}.cdstl-card{background:linear-gradient(180deg,#fff,var(--cdstl-cream));border:1px solid var(--cdstl-line);border-radius:8px;padding:22px}.cdstl-card h4{margin:0 0 8px}.cdstl-card p,.cdstl-section p{color:var(--cdstl-muted);margin:0 0 16px}.cdstl-dark{background:var(--cdstl-dark);border-left:5px solid var(--cdstl-accent);border-radius:8px;color:#fff;margin-top:28px;padding:28px}.cdstl-dark h3,.cdstl-dark p{color:#fff}.cdstl-dark a{color:#d5f5fb}.cdstl-specs{border-collapse:collapse;font-size:16px;width:100%}.cdstl-specs td{border-bottom:1px solid var(--cdstl-line);padding:13px 16px}.cdstl-specs td:first-child{font-weight:800;width:34%}.cdstl-faq div{border-bottom:1px solid var(--cdstl-line);padding:18px 0}.cdstl-faq h4{margin:0 0 8px}.cdstl-cta{background:#111;border-radius:10px;color:#fff;margin-top:34px;padding:30px;text-align:center}.cdstl-cta h3,.cdstl-cta p{color:#fff}@media(max-width:768px){.cdstl-hero,.cdstl-grid{grid-template-columns:1fr}.cdstl-hero{padding:28px 20px}.cdstl-trust{font-size:12px}} Free US shipping over $4930-day money-back guarantee8,800+ store reviewsClear double-sided lock Single pin practiceSee the Pin Stack, Then Learn to Feel It This clear double-sided training lock gives beginners the missing visual link between pick movement and pin movement. Start with the transparent body helping you understand lift, set, overset, and tension. Then turn the lock away from your eyes and learn the feel. That is where the real progress starts. Why clear locks help They make tension visible before it becomes instinct Double-sided Two sides give you more than one practice feel from a single training lock. Visible mechanism Watch the pins move while you learn lift height and tension control. Keys and case Existing product copy records two working keys and a smart case. Build a beginner bench One lock is useful; a progression is better For a broader clear-lock route, add the Dangerfield Clear Practice Locks Set of Three. For a proper beginner picking kit, compare the SouthOrd PXS-14 Beginner Lock Pick Set. Details What is included Tool type Clear double-sided practice lock Practice focus Single pin picking and tension control Included Two working keys and case recorded in existing product copy Best for Beginners who want to connect visible pin movement with hand feel Practice tip Do not stay dependent on the clear body Use the clear view to understand what is happening, then deliberately remove that advantage. Pick it with the mechanism turned away, close your eyes for short runs, and make your tension hand do more listening. Clear locks are a bridge, not the destination. FAQ Questions buyers usually ask Is this for absolute beginners? Yes. It is built to make the pin stack visible while you learn the basics. Does it come with keys? Yes. The existing product copy records two working keys. Why double-sided? It gives you extra practice variety in one lock body. Will this replace real-lock practice? No. It teaches the mechanism, then you should move toward opaque practice locks. Start visible, then build feel This is a friendly practice lock for learning what your pick and tension wrench are actually doing.