【PART NUMBER】: 49-16-2554 for this m12 stubby impact boot. 【COMPATIBLE WITH】: For protecting the M12 FUEL 3/8 in. and 1/2 in. Compatible with 2554-20, 2555-20, and 2555P-20 impact wrench. Form-fitting, lightweight design protects the tool and work surface while adding minimal size or weight to the tool,The durable proprietary rubber withstand corrosive materials commonly found in maintenance environments Using this M12 tool boot on any other incompatible electric tool may cause damage to the tool, so please pay attention to the suitability of the cover for your tool A brand-new, unused, unopened, undamaged item in its original packaging. Return refund: If you have any questions, you can refund in full without any problems