Check the listing for details. 1” Inch Bore Single Split Shaft Stop Collar Black Oxide Finish (Qty 2)FREE Ship. Condition: New. Listed at 10.80 USD. WE SELL ONLY HIGH-QUALITY BRAND-NEW INVENTORY! Owned and Operated in the U.S.A. CB1-100 1" ID Single Split Clamping Shaft Collar, Black Oxide Finish Bore: 1" Outer Diameter: 1 3/4" Width: 1/2" Screw: 1/4-28" Weight: 3.2 oz each One piece clamping collars are designed to fully engage the shaft without marring. They have greater axial holding power than set screw collars and are effective on hard & soft shafts. Available in Black Oxide, Stainless Steel, Zinc Plated, and Aluminum. Specials such as surface mounting holes, keyways etc. are available for quote.WE SELL ONLY HIGH-QUALITY BRAND-NEW INVENTORY! Owned and Operated in the U.S.A. CB1-100 1" ID Single Split Clamping Shaft Collar, Black Oxide Finish Bore: 1" Outer Diameter: 1 3/4" Width: 1/2" Screw: 1/4-28" Weight: 3.2 oz each One piece clamping collars are designed to fully engage the shaft without marring. They have greater axial holding power than set screw collars and are effective on hard & soft shafts. Available in Black Oxide, Stainless Steel, Zinc Plated, and Aluminum. Specials such as surface mounting holes, keyways etc. are available for quote.