Lyman's Deluxe Anodized Aluminum Loading Blocks are made for precision reloaders who want their equipment to be as high quality as the ammunition that they produce. The loading blocks are CNC milled from a solid billit of 6061-T6 aluminum to tight tolerances for a close fit to specific cartridges, unlike the common one-size-fits-all plastic blocks and trays. The blocks are made in three sizes to fit most common rifle head sizes, and will hold 50 rounds. Blocks come with stick-on rubber non-slip feet to keep them from sliding on your bench. Lyman's Deluxe Anodized Aluminum Loading Blocks help improve various operations during the reloading process- saving you time and hassle. Order today! .388" hole size - fits: 17 Rem, 17 Rem Fireball, 204 Ruger, 222 Rem, 222 Rem Mag, 223 Rem, 300 AAC. .485" hole size - fits: 225 Win, 22-250, 220 Swift, 243 Win, 6mm Rem, 240 Wea Mag, 250 Sav, 257 Roberts, 25-06, 260 Rem, 6.5x55, 270 Win, 7mm-08, 7mm Mauser, 280 Rem, 300 Sav, 308 Win, 30-06, 7.65 Arg Mauser, 8mm Mauser, 338 Fed, 358 Win, 35 Whelen. .565" hole size - fits: 223 WSSM, 243 WSSM, 25 WSSM, 257 Wea Mag, 264 Win Mag, 270 WSM, 270 Wea Mag, 7mm Rem Mag, 7mm Wea Mag, 7mm WSM, 7mm Rem SAUM, 7mm STW, 7mm Rem Ultra Mag, 300 H&H Mag, 300 Rem SAUM, 300 WSM, 300 Win Mag, 300 Rem Ultra Mag, 300 Wea Mag, 8mm Rem Mag, 325 WSM, 338 Win Mag, 340 Wea Mag, 338 Rem Ultra Mag, 375 H&H Mag, 375 Ruger, 375 Rem Ultra Mag, 416 Rem Mag, 450 Marlin, 458 Win Mag.