Features: Suitable Model: Suitable for Hinderer XM18. Battery: 416 stainless steel material, durable to use. Treatment: Heat treatment about 50 degrees, heat resistant. Tail hole: suitable for key chain and easy to carry. Package Included: 2 screwdrivers are included for use. Specification: Material: Stainless Steel Size: As Picture Shown Color: SilverLength (Approx.): 25mm/0.98 inch Diameter (Approx.): 10.3mm/0.41 inch Depth of the highest word (Approx.): 1.2mm/0.05 inch Diameter of round tail hole (Approx.): 4mm/0.16 inch (suitable for keychain and easy to carry)Suitable Model: for Hinderer XM18Package Included: 2x ScrewdriverNote: 1. Please allow 1-2cm errors due to manual measurement, Please make sure you do not mind before ordering.2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you for your understanding.