Sands Level & Tool SL3030 30” Professional Cast Aluminum Level (6 Vials)General Information Brand Sands Level & Tool UPC 030553101169 California Residents Proposition 65 Warning Part Number SL3030 Product Type Level Physical Characteristics Length 30" (762mm) Weight 0. 91 kg 2. 00 lb Material Cast Aluminum; Glass Vials Details Features Durable cast aluminum construction Will not warp or rust Solid set Cat's Eye Yellow double bent vials for accuracy Double bent vials make leveling easier Guaranteed accurate to . 0004" per