Derraco Bullet Comparator set 17cal-45cal

Bushing holding body: 303 Stainless steel

Headspace & bullet comparator bushings: 6061 Aircraft grade aluminum alloy.   Surface color-coded and hard anodized with a ceramic-like wear-resistant surface.

Compatible caliper jaw thickness: ≤4.70mm

Bullet bushing sizes: .17, 20, 22, 24, 25, 26, 27, 28, 30, 33, 35, 37, 41, 45

Headspace gauge sizes: 330,350,375,400,420. Please note 450 headspace gauge(for 338LM) is available separately https://www.derraco.com/product/comparator-headspace-gauge-for-338-lapua-magnum/