Pink anti-static, 15 MIL smooth wall poly inserts. Fits a 55 gal drum. Smooth side walls are made from vacuum formed and seamless low density polyethylene ldpe. Also, made with a pink anti-static additive to help prevent static discharges from harming your product. Our rigid drum & pail liners meet FDA specifications and are BPA free. 20 per case, price be each, must order in multiplies of 05.