1. Material: high carbon steel, PVC
2. Expansion range: 5-22mm
3. Product size: 170 x 125mm
4. Applicable hollow bolt models M4, M6, M8, M10
5. Forged with high carbon steel to increase strength and extend service life
6. Anti-slip handle design, comfortable grip, time-saving and labor-saving, can be operated with one hand
7. Widely used in water and electricity maintenance and installation, construction, steel structure erection and other industries
8. Used for fastening and installation of hollow expansion screws, such as installing expansion screws on hollow non-metallic plates such as gypsum ceilings, wood bonding boards, fiber composite boards, etc.