Kaw Valley Precision MACH 1in Spacer 1/8x28 Threads per Inch Black Small. OR you can spec ytheir own comp a la carte for the perfect length linear comp Each spacer is machined from 6061-T651 Aluminum and hard coat anodized for wear protection. The spacers incorporate an OD 1-1/4 hexagonal wrench flat configuration for easy installation with a standard open end or adjustable wrench. Specifications for Kaw Valley Precision MACH Spacer: Manufacturer: Kaw Valley Precision Color: Black Finish: Hard Coat Anodized Fabric/Material: 6061-T651 aluminum Outer Diameter: 1.285 in Condition: New Features of Kaw Valley Precision MACH Spacer Length: Adds 1"or 3" of Comp Length Package Contents: Kaw Valley Precision MACH Spacer Kaw Valley Precision KVP-MACH-S-1: MACH 1in Spacer 1/8x28 Threads per Inch Black Small