The Proxxon Step Clamp Set (No. 24256) is a pair of steel step clamp assemblies for securing workpieces to the MICROMOT standard T-slot tables of the Proxxon MICRO Mill MF 70 (No. 37110), KT 150, and PD 230/E. Each pair consists of 2 step blocks, 2 clamps, 2 nuts, and 2 T-slot nuts sized for the MICROMOT standard T-slot (11.5 × 11 × 4mm / 29/64" × 7/16" × 5/32"). Step blocks allow the clamp to be set at multiple height increments to match the workpiece height, ensuring clamping force is applied horizontally for secure, distortion-free workholding. The smaller MICROMOT T-slot size distinguishes this set from the larger No. 24257 set (for PD 230/E and FF 230 with larger T-slots). Sold as a pair (2 complete clamp assemblies). Contents 2 × step blocks (steel) 2 × clamps (steel) 2 × nuts 2 × T-slot nuts — MICROMOT standard (11.5 × 11 × 4mm) Specifications Part Number: No. 24256 Compatible machines: MF 70 (No. 37110), KT 150, PD 230/E T-slot size: MICROMOT standard — 11.5 × 11 × 4mm (29/64" × 7/16" × 5/32") Material: Steel Quantity: Pair (2 complete clamp assemblies) Step Clamp Set Family — Which to Choose No. 24256 (this set) — MICROMOT standard T-slot (11.5×11×4mm); for MF 70, KT 150, PD 230/E No. 24257 — larger T-slot; for PD 230/E and FF 230; clamps to 35mm height; supplied in wooden box Works Well With Proxxon MICRO Mill MF 70 (No. 37110) — primary compatible machine Precision Machine Vise for MF 70 (No. 24260) — alternative workholding for the MF 70 Eccentric Clamping Fixture ES 70 (No. 24270) — quick-action clamping alternative for MF 70 Step Clamp Set — Larger T-Slot (No. 24257) — sibling set for FF 230 and larger T-slot machines Chip and Drip Collecting Tray for MF 70 & FF 230 (No. 24116) — chip containment for the MF 70 HSS Milling Cutter Set (No. 24610) — milling cutters for use with clamped workpieces on the MF 70 Returns can only be accepted for unused product in its original packaging. A copy of the original packing slip or invoice is required. For warranty claims please call 1-877-776-9966. See our full return and refund policy. California Residents Prop 65 Information WARNING: This product can expose you to chemicals including lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.