This item have three size of tig welding back caos 57Y02(Long), 57Y03(Medium), 57Y04(Short). They are fit for WP-17/18/26 welding torch. You can choose from them according to your individual needs. Features: 1. 100% brand new and high quality. 2. Made of high quality plastic and copper material, these welding back caps are of the resistance of high temperature and high pressure. 3. Firm and durable with long service life. 4. There are three sizes for you to choose from. 5. Replacement part for WP-17/18/26 welding torch. Specifications: Material: copper & plastic Color: black Applicable Welding Torch: WP-17/18/26 Model: 57Y02(Long), 57Y03(Medium), 57Y04(Short) Size (Approx.): 12*2cm/4.72*0.79in (57Y02) 6*1.5cm/2.36*0.59in (57Y03) 2.5*1.7cm/0.98*0.67in (57Y04) Option: 3pcs 57Y02 57Y03 57Y04 (1pcs of each model) 15pcs 57Y02 57Y03 57Y04 (5pcs of each model) 5pcs 57Y02 5pcs 57Y03 5pcs 57Y04 Package Included: One of the following: 3 x 57Y02 57Y03 57Y04 Back Caps (1pcs of each model 15 x 57Y02 57Y03 57Y04 Back Caps (5pcs of each model) 5 x 57Y02 Back Caps 5 x 57Y03 Back Caps 5 x 57Y04 Back Caps Note: 1. Due to the difference between the monitors and light effect, the picture may not reflect the actual color of the item. 2. Please allow small error due to manual measurement. Thanks for your understanding.