Long hex Allen key set, 9 pieces, sizes from 1.5mm to 10mm, model 16763-29M, designed for loosening and tightening internal hexagonal screws in deep and narrow spaces. It features a long design for better access and greater control during work, and is made of high-quality stainless steel that is resistant to rust and wear for heavy-duty use. Suitable for mechanical maintenance, electronics, and car workshops.