pry knife is specifically designed for pressure fit watch cases. They work perfectly on watch backs that have a plain and smooth surface with a small tab or notch on the side. With these tools, you can easily and safely pry open the watch back for repairs. EASY TO USE - Each short watch back remover pry tool is 8cm (3.15 inches) in length and 4cm (1.57 inches) in wide, making them compact and easy to handle. Simply locate the tab or notch on the watch back, choose and use the right opener tool, gently pry it open. The process is simple and hassle-free, making it suitable for all skill levels. Including 6 different styles of watch case removal tools, anti-static tweezers and cleaning cloth, making it perfect for opening watch case back and replacing watch batteries. The anti-static tweezers can easily pick up the battery and other moving parts without conducting electricity and the double-sided fleece watch cleaning cloth can be used to clean watches or other jewelry items. watch battery replacement tool kits are made of durable stainless steel and plastic, these watch back remover tools for watch repair are built to last. The high-quality workmanship ensures their strength and durability, allowing you to confidently use them for all your watch repair needs. Colour: A Black Material:Metal Package Contents: 1 set * 377/376 watch battery Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.