• Mountain bike bottom bracket removal tool. • Material: high-quality steel, rust-resistant and durable. • Size: 5*2.9*2.9 cm. • Compatible with any 20-tooth bottom bracket. • Can be used with a 23 mm socket wrench, an adjustable wrench, or a spanner. • Compact metal frame, easy to carry. • Practical tool for installation, loosening, or tightening. • Lightweight and portable, easy to carry and use. • Compatible with 20-tooth square tapered bottom brackets. • Length: around 4.8 cm; Female thread diameter: approximately 13.4 mm; approximate weight 113 g.