What is this?Drum tight screw is made of iron material, high hardness, no deformation, beautiful and practical, great for bass drum.What will I get?The drum tight screw, in size of: Thread Size: M6; Rod Length: 100mm/3.94 inchIn the package of 2 x drum tight screw, 2 x washerAre there any advantages of the product?The thread is complete, the pitch is uniform, the lines are clear, the force is uniform and the fastening force is good, and not easy to fall out.How to use it?With a washer, tension rod can be easily tighten the drum surface, easy to install and remove. Great for drum repairs and renovations.What should I notice?The size is measured manually, please allow the error +/-0.1 inch before purchasing.