Obsidian Arms AR-15 Bolt Catch Punch Set 4.5in. They are long enough to easily reach the bolt catch roll pin from either side of the receiver and the removal punch has a flat side for removal of the bolt catch roll pin from the front of the receiver. It has been heat treated for hardness so that it will not deform when used. Like our full punch set this also has a life time warranty if you break it let us know and we will send you a new one. Specifications for Obsidian Arms AR-15 Bolt Catch Punch Set: Manufacturer: Obsidian Arms Color: Black Finish: QPQ Fabric/Material: 4140 Steel Gun Make: AR Platform Gun Model: AR-15 Length: 4.5 in Weight: 0.17 lb Country of Origin: USA Features of Obsidian Arms AR-15 Bolt Catch Punch Set The BEST tool for removing and installing the bolt catch roll pin Can also be used for removing and installing the forward assist roll pin 4140 alloy steel is heat treated for the right hardness and durability QPQ finished for a rust-preventative coating Package Contents: Obsidian Arms AR-15 Bolt Catch Punch Set 3/32in Bolt Catch Removal Punch 3/32in Roll Pin Starter Punch 3/32in Roll Pin Punch What firearm models does the manufacturer say Obsidian Arms AR-15 Bolt Catch Punch Set is compatible with? The manufacturer says that Obsidian Arms AR-15 Bolt Catch Punch Set is compatible with AR-15Obsidian Arms OA-BCPS: AR-15 Bolt Catch Punch Set 4.5in