ITEM NAME:2Pcs Aquarium Acrylic Tank Outflow Inflow Pipe Water Hose Clip Holder Description: Material: Acrylic Feature: Durable, Clear, Break Resistant, Stable Structure and Easy to Install. Reduces application of glue and suction cups. Application: Suitable for fixing water changing pipe/tube/hose, feeding tube, PH monitor probe etc stably. Size(LxWxH): Approx. 6x4x3.5cm/2.36x1.57x1.38inch For Pipe Dia: Approx. 2.6cm/1.02inch; For Tank Wall Thickness: ≠¤ 1.8cm/0.71inch Package Includes: 2 Piece Fixing Clamp 8 Pieces Screw Note: Due to the manual measurement, there is a slight difference between the size from the above and the actual item. Because of the displaying and lighting effects, monitor settings,etc.there could be a little color difference acceptable, please kindly note..For Pipe Dia: Approx. 2 Piece Fixing Clamp. Feature: Durable, Clear, Break Resistant, Stable Structure and Easy to Install. Material: Acrylic. 8 Pieces Screw. Application: Suitable for fixing water changing pipe/tube/hose, feeding tube, PH monitor probe etc stably.