Aluminum body with polypropylene inserts., TPU bumpers that provide high impact protection., Base with neodymium discs, which ensure a high level of magnetic hold to work hands-free on steel beams., Lateral groove in "V" that facilitates its use in tubes and hoses, Drops with greater resistance to abrasion and impact, Ideal for construction, carpentry, plumbing and home use. Length: 9" (228.6mm), Width: 47mm, Maximum Tolerance: 0.001m/m