Check the listing for details. Hornady Lock N Load Headspace Gauge KIT HK66 with 5 Bushings and Comparator Base. Condition: New. Listed at 53.84 USD. Lock-N-Load Headspace Gauge 5 Bushing Set with Comparator HK66 NEW! For: 257 Roberts, 260 Remington, 204 Ruger, 270 Winchester, 22-250 Remington, 270 Winchester Short Magnum (WSM), 220 Swift, 30-06 Springfield, 222 Remington, 30-30 Winchester, 223 Remington, 300 AAC Blackout (7.63x35mm), 243 Winchester, 300 H&H Magnum, 7mm-08 Remington, 7.62x39mm, 6.5 Creedmoor, 6.5 Grendel, ETC The Hornady Lock-N-Load Headspace Gauge is a great tool for increasing the accuracy of your loaded ammunition. The Headspace gauge measures from the case-head to the datum line on the case shoulder to allow proper brass resizing for a precise fit with the rifle chamber. Bushings fit the comparator body and attach to calipers with a thumb screw. Can be used with bottleneck cases from 17 caliber through large belted magnums. Ackley Improved chambers use the same bushing size as the parent case. Notes: All bushing are interchangeable. Works on all bottleneck type cases and wildcats. This set fits 17 caliber through belted magnums. Must be used with Calipers. Includes: Comparator body 5 bushings B-2000 Gauge Allen wrench ~~~~~~~~~~~~~~~~~~~~ ALL MANUFACTURERS WARRANTIES WILL APPLY ! All of our products are BRAND NEW in the box; and contain all of the parts, materials and documentation. You can expect and will receive prompt delivery of your item. We will ship your order within ONE DAY! We are unable to accept returns on used, fitted, or altered parts. Returns must be in new, unused condition and in their original packaging.