"This Vestil steel pipe safety bollard works indoors or outdoors to protect work areas, racking and personnel. U.S.A. Outside Diameter in. 1 3/4, Height in. 36, Color Safety yellow, Base Plate Size L x W in. 4 x 4, Anchor Bolt Size Dia. x L in. 4 3/8 x 3 not included, Compatible With Item Number s 34357, Material Type Steel, Finish Type Powder-coat. Can be used both indoors and outdoors to protect work areas, racking and personnel Welded steel construction with powder-coated safety yellow finish Includes welded steel caps 4 in. x 4 in. base plate with 4 pre-drilled mounting holes Mounting kits and replacement caps available sold separately"