1. 40:1 ratio air motor
2. Heavy duty cast aluminum body, for maximum durability & longer service life
3. 3-way loading-bulk, filler pump or 14oz. Cartridge
4. Durable follower rod & spring for consistent priming
5. Positive grip follower handle
6. 4-Jaw super grip coupler for better grip and longer service life
7. Non-slip knurled for better grip