RCBS® Bullet Lubricant fits the Lube-A-Matic® and most other sizers/lubricators that use a hollow stick lubricant. It's a non-toxic, temperature-resistant blend of Alox and beeswax, developed in cooperation with top-rated competition cast-bullet shooters and formulated to NRA specifications. Simply apply the lubricant to the hollow stick using the sizer/lubricator and then run the bullets through the device. The lubricant will ensure a smooth and consistent resizing process and help to prevent damage or sticking during the reloading process. Note: Rifle Bullet Lubricant is for outdoor use only.