Crosman Steel Breech Kit Bolt Probe - Custom Upgrade - .22 or .177 Caliber - Your Color Choice! - Fits 2240 2250 2260 2289 1322 1377 These are the bolt probes and handle for the Crosman Steel Breech kit. They will also fit in the OEM plastic breeches. The bolts are available in either caliber and can be left as "blued", polished to a high shine or powder coated to nearly any available color.