Perfect for RC Monster Truck, Crawler Cars, Cars, Helicopter Model Rod End. High Quality and Durable in Using. Color: Black Material: Plastic Size Chart: M2 Rod Size: 24 x 8.5 x 4mm / 0.94 x 0.33 x 0.15inch. M2 Screw Hole Size: 2 x 2 x 4mm / 0.08 x 0.08 x 0.16inch. M2.5 A-Style Rod Size: 24 x 8.5 x 4mm / 0.94 x 0.33 x 0.16inch. M2.5 A-Style Screw Hole Size: 2.5 x 2.5 x 4mm / 0.10 x 0.10 x 0.16inch. M2.5 Rod Size: 24 x 8.5 x 4mm / 0.94 x 0.33 x 0.16inch. M2.5 Screw Hole Size: 2 x 2 x 4mm / 0.08 x 0.08 x 0.16inch. M3 Rod Size: 29 x 10.5 x 5mm / 1.14 x 0.41 x 0.20inch M3 Screw Hole Size: 3 x 3 x 5mm / 0.12 x 0.12 x 0.20inch. Package Includes: 10 Pieces RC Model Ball Head(5 Pack) Note: Please allow 1-3mm differs due to manual measurement. Due to the different display and different light, the picture may not reflect the actual color of the item. Thank for your understanding.