Product Name: Round Shaped Knurled Head Clamping Handle Knob (M4x10) Head Dia: 14mm / 0.55"; Thread Size: M4 x 10mm (D*L); Main Material: Plastic, Metal; Main Color: Silver, Black Package Content: 10pcs x Round Shaped Clamping Handle Knob Net Weight: 40g Surface Treatment: Galvanized Note: 1. Thread Type is metric, please check the thread size you need before buying. 2. All the sizes are for your reference only. 1~2 mm data error is allowed. Thank you for your understanding. 3. The actual product maybe slightly different from the picture shown due to lighting and the color setting of each individual monitor. Please allow the slight color difference.