Features: High quality replacement feed rollers for TIG welding machine welding wire feeding system. It is made by ball bearing steel, high and precision and strength, it brings long life and smooth feeding. Provides very stable feeding through the push system, high efficiency even at the lowest feeding speed. Can be used in electronic appliances, instrumentation, home appliances, welding components. If you have any questions or concerns, please contact us, we will give you satisfactory service. Specifications: Material：steel Type：V0.6mm / v0.8mm (v0.024 ”/ v0.031”)； V0.9mm / v1.0mm (v0.035 ”/ v0.039”). Package Includes: 1 PCS Welding Feed Roller note: Please allow 0-1cm error due to manual measurement. Make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!