Endless Stoppard Frame — a 4-wheel aluminum inline skate frame for fitness, urban, and freestyle skating. Compatible with all 165mm boots. 165mm 2-Point Mount. Standard 165mm 2-point mounting — fits the majority of fitness, urban, and slalom boots on the market. 6061-T6 CNC Aluminum. CNC-machined 6061-T6 aluminum — heat-treated for stiffness, precision-cut for direct power transfer and zero flex. Frame specs: 240mm wheelbase · max 80mm wheels · 4 wheels. Includes: 8mm Single-Sided Torx Axles · Mounting Bolts · Allen Tool · Bearing Spacers. Sold as a pair. Best for: Fitness · Urban · Freestyle Skill level: Intermediate to Advance Compatibility: 165mm raised heel boots only (NOT compatible with UFS or Powerslide Trinity). Recommended for boot sizes 44 and below. No brake compatibility.