Designed for Small-Diameter Type 1 Cut-Off Wheels - Accepts standard abrasive discs from 0.035" to 1/4" thick; screw length prevents over-tightening that could crack thin cutting wheels. onstructed from Solid Metal for High-RPM Durability - Resists thread stripping, bending, and fatigue during extended use on air or electric die grinders in industrial settings. Compatible with Wheels That Have 1/4" or 3/8" Arbor Holes - Works with common resin-bonded and reinforced cut-off discs used for metal, stainless steel, and rod trimming. Features a 1/4" Shank and 1-15/16" Overall Length - Includes two mounting screws: one for 3/8" arbor wheels (3/8" diameter x 5/8" long) and one for 1/4" arbor wheels (1/4" diameter x 5/8" long), ensuring secure fitment. Designed for use with standard 1/4" shank die grinders that accept Type 1 cut-off wheels - Sold as a 2-pack for backup or multiple tool setups; delivers stable wheel mounting and minimal runout during high-speed cutting operations., Weight: 0.220462262 pounds, Manufacturer: Wesafrae