5 hole hub professional robot hub for equipment engineering Feature:1. Made of high-quality aluminum alloy material, durable, high strength, and has a long service life.2. 4 round holes with a diameter of 4mm/0.2 inches are designed with countersunk holes, which can avoid the impact of the protrusion of the screw head.3. After careful design and professional production, it can effectively ensure the flatness of the installation plane.4. The special design enables this adapter to connect the actobotics with goBILDA components and robot parts.5. hole pattern adapter, suitable for robots, engineering equipment, etc., to make assembly more precise. Specification:Item Type: Hole Pattern AdapterMaterial: Aluminum AlloyApplication: Threaded Rod Mounting Ring, Suitable for Robots, Engineering Equipment, etc. Package List:5 x AdapterNote:1. Actobotics Hole Pattern Adapter (16 - 1) has four 6 - 32 threaded holes, which fit Actobotics®0.770 hole pattern.2. The Actobot Hole Pattern Adapter (16 - 2) has four 4mm diameter through-holes, which fit the Actobotics®0.770 hole pattern.3. Tetrix Pattern Hole Adapter (16 - 3) has four 6 - 32 threaded holes that fit Tetrix pattern holes.4. Please adjust the appropriate size of the project before installation and use. 1) we accept Alipay, West Union, TT. All major credit cards are accepted through the payment processor's secure escrow. 2) Payment must be made within 3 days of placing the order. 3) If you can't check out immediately after the auction ends, please wait a few minutes and try again, payments should be completed within 3 days. About Shipping 1.