A 20-round loading block sized for the .473" case-head family - .308 Winchester, 6.5 Creedmoor, 6mm Creedmoor, .243 Winchester, .260 Remington, 7mm-08 and .22 Creedmoor all drop straight in. Each of the 20 wells is 13.6 mm across with a chamfered lead-in, so cases seat one-handed without fishing for the hole. Wells are blind-bottomed - no powder escapes onto the bench - and the raised perimeter rim catches anything that does spill. Twenty rounds is the working count for a load-development session or a match day's ammo. Printed in black PETG: tougher and more heat- and solvent-tolerant than PLA, so it shrugs off case lube, a hot garage and being knocked off the bench. Dimensions: 77 x 95 x 14 mm (3.0 x 3.7 x 0.6 in) Well diameter: 13.6 mm | Well depth: 12 mm Material: PETG, black