Rustark Stainless Inserts Helicoil Assortment Review

【7 Size Assorted Wire Screw Sleeve Set】The kit contains 7 kinds of size: M3(20pcs, M4(15pcs), M5(15pcs), M6(10pcs), M8(8pcs), M10(8pcs), M12(8pcs). Totally 84 piece. Package into a plastic grids case and each size sorted a grid separately. 【304 Stainless Steel】Made of 304 stainless steel, hardness, rust-resistance and anti-corrosion. Not easy to slick, deep thread, no deformation, smooth thread, high precision. High hardness and low abrasion. 【Strong Connection 】With certain elastic and even load so that it is resistant to vibration. locking-design allows it lock the the screw into the threaded hole,avoiding sliding wire. Greatly improve strength and stability of screws connection. 【Widely Application】Widely used in aviation, automobiles, steam turbines, electronic communications, computers, lamps, molds, mechanical equipment, radiators, and semiconductor equipment. 【 Reliable After-sale Service】We offer you reliable after-sales service. If you have any questions about our products or any problems with your packages, please feel free to contact us. We will reply you within 24 hours and we will try our best to solve the problems until you are satisfied.