Lyman Top Punches are precisely machined to fit the bullet nose shape exactly. This eliminates nose deformation. Fits Lyman 450/4500 Lube Sizer and RCBS Lube-A-Matic-2 Bullet Sizer/Lubricator. Specifications: - Fits the following Lyman Bullet Molds: 766-375-- 38 Special, 357 Magnum 170 Grain Semi-Wad cutter - Weight: 0. 114 lbs.