Features:3.Drum Screw Tension Rods: Made of high-quality iron material, lightweight and durable.4.The bolt lengths are all appropriate sizes, you can easily tighten the drum head and get a good playing experience.5.The drum head can be easily tightened for easy installation and removal. Ideal for drum repairs and refurbishments.6.Drum Keys: Suitable for all 1/4inch standard socket square drum key tension rods. For snares, toms and bass drum.7.Ideal tool for quickly and easily removing and replacing drum heads.Specifications:Material: Iron silver platedColor: SilverBrand name: BQLZRSize:Drum Tension Screw: 110x5mm/4.33x0.2inch (LxDia)T-shaped Drum Keys:Length: 45mm/1.77inchHeight: 35mm/1.38inchSocket inner diameter: 5.5x5.5mm/0.22x0.22inchZ-shaped Drum Keys:Length: 65mm/2.56inchHeight: 44mm/1.73inchSocket inner diameter: 5.5x5.5mm/0.22x0.22inchWeight: 279 gPackage include:10 x Drum Tension Rods10 x Gaskets2 x T-shaped Drum Keys1 x Z-shaped Drum Keys