These RCBS factory replacement decapping units are the same ones we ship with our products - so you can rest assured they will work. These replacement decapping units feature an expander rod, expander ball, and decapping pin. They are used in sizing dies to de-prime the case and expand the case neck in bottleneck cartridges. It is always a good idea to keep an extra decapping unit on-hand so you can ensure your reloading sessions do not get interrupted if you ever damage them during use. Factory Replacement Part Precision Machined to ensure concentricity Expander Rod, Expander Ball and Decapping Pin Limited Lifetime Warranty Compatibility 9800 9801 9803 9805 Exp-Decap Unit .221 Exp-Decap Unit .20 Exp-Decap Unit .226 Exp-Decap Unit .243/6mm .22 Remington Jet .204 Ruger .22 Savage High-Power .240 Weatherby Magnum .243 Winchester 6mm Remington (244 Remington) 9806 9807 9808 9809 Exp-Decap Unit .25 Exp-Decap Unit .264/6.5mm Exp-Decap Unit .270 Exp-Decap Unit .284/7mm .25-06 .260 Remington .270 Weatherby Magnum .280 Remington (7mm Exp. Rem.) .25-20 Winchester .264 Winchester Magnum .270 Winchester .284 Winchester .25-35 Winchester 6.5mm-06 7mm Bench Rest Remington .250 Savage (250-3000 Savage) 6.5mm x 52 Carcano 7mm Remington Magnum .257 Roberts 6.5mm x 54 Mannlicher-Schoenaur 7mm Shooting Times Westerner .257 Roberts Improved 40 degrees 6.5mm x Swedish Mauser 7mm Weatherby Magnum .257 Weatherby Magnum 6.5mm x 57 7mm-08 Remington .25 x .47 6.5mm x 68S 7mm x 57 Mauser (7mm Mauser) .270 Weatherby Short Magnum (WSM) 7mm x 64 Brenneke 7mm x 65 Rimmed 7-30 Waters 9812 9813 9814 9815 Exp-Decap Unit .30/7.62mm Exp-Decap Unit .30 SB Exp-Decap Unit .310/7.62mm Exp-Decap Unit .310 Short .30 Remington .30 Luger (7.65mm Luger) .303 British 7.62mm x 39-.308/.311 .30-06 Springfield .30 Mauser (7.63mm Mauser) 7.65mm x 53 Belgian Mauser .30-30 Winchester 7.7mm x 58 Japanese Arisaka .30-338 Winchester Magnum 7.62 Russian .30-378 Weatherby Magnum .30-40 Krag .300 AAC Blackout .300 H&H Magnum .300 Remington Ultra Magnum .300 Savage .300 Weatherby Magnum .300 Winchester Magnum .307 Winchester .308 Norma Magnum .308 Winchester 7.5mm x 55 Schmidt-Rubin 7.62mm x 54R Russian 9817 9818 9820 9821 Exp-Decap Unit 8mm Exp-Decap Unit .338 Exp-Decap Unit .35 Exp-Decap Unit .366 8mm Remington Magnum .338 Lapua (.416 Rigby Case) .35 Remington 9.3mm x 62 Mauser 8mm-06 .338 Winchester Magnum .350 Remington Magnum 9.3mm x 74R 8mm x 57 Mauser (8mm Mauser) .338-378 Weatherby Magnum .358 Norma Magnum 8mm x 68S Magnum .340 Weatherby Magnum 9821 9822 9825 9826 Exp-Decap Unit .366 Exp-Decap Unit .375 Exp-Decap Unit .416 Exp-Decap Unit .45 9.3mm x 62 Mauser .375 H&H Magnum .416 Rigby .460 Weatherby Magnum 9.3mm x 74R .378 Weatherby Magnum 9834 9835 9836 9837 Exp-Decap .355 SB Exp-Decap Unit .40 SB Exp-Decap Unit .22 PPC (.057) Exp-Decap Unit 6mm PPC (.057) .357 Sig .400 CorBon .22 PPC 6mm PPC .22 GT 9839 9816 Exp-Decap Unit 6.5mm (.057) Exp-Decap Unit .320 6.5mm Creedmoor .32 Winchester Special 6.5 x 47 Lapua .32.40 Winchester .264 LBC AR 6.5mm Grendel