Size:1.0 mm ID / 1.5 mm ID / 2.0 mm ID Item Type:Ear Care Material:PVC Item Name:PVC Tubing Color:Transparent Application:Replacement of hearing aid earmold tube, IEM tube 100cm PVC Tube Tube for IEM BTE Hearing Aid Ear Mold DIY In-ear Monitor Driver Damper 1.0mm ID, 1.5mm ID, 2.0mm ID 1. Item Name: PVC tubing 2. Application : IEM (In-ear Monitors) / BTE hearing aid earmolds 3. Material: PVC 4. Color: Transparent 5.Choose from multiple sizes : 1.0 mm ID x1.5 mm OD, 1.5mm ID x 2.5 mm OD, 2.0mm ID x 3.0 mm OD, 2.0mm ID x 3.1 mm OD, 2.0mm ID x 3.2mm OD, 2.0mm ID x 3.5mm OD, For earmoulds used with BTE (behind the ear);hearing aids and In-ear monitors;the quality of tubing is very important. For high powered aids the tubing should be thick-walled with a hole diameter of 2mm. Use of standard tubing on high powered aids may cause feedback. Earmoulds need to be re-tubed regularly. Replace the earmould tubing as soon as it begins to harden. It is surprising how much the tubing can affect the sound quality.