Air Grinder Straight Grinder 4.0cfm Polishing Machine Feature:1. Efficient use: this straight grinder has 22000 rpm. High charging speed, which enables stable operation with higher efficiency.2. Reliable Operation: The pneumatic grinding mill with silencer has low operating noise and small vibration, compatible with 1/4in and 1/8in.3 sleeve. Wide Tool: Ideal for local grinding of key areas, removing solder joints and rust stains on metal products and so on.4. Better Design: Combining an ergonomic zinc alloy body and a comfortable handle with a red protective cover, manual control is simpler.5. Easy to carry: It is lightweight and compact, both daily storage and carrying are very convenient. Specification: Item Type: Straight Grinder Model: YDE 4975 Material: Zinc Alloy Sleeve Size: Approx. 6mm/0.24 inch or 3mm/0.12 inch. No loading speed: 22000 rpmAir pressure: 90psi, 6.3 kg/cmsup2; Air Consumption: 4.0cfmAir Inlet: 1/4inPackage List:1 x Straight Grinder2 x Wrench1 x Air InletNote:Usage:1. Before and after daily use, please introduce 2 - 3CC #60 pneumatic lubricating oil, lubricating oil from the air inlet.2. Allow the machine to idle for a few seconds after filling with oil.3. Generally, the air source compressed by a traditional air compressor contains water and lubricating oil lubricating oil in the air compressor extracted by the air compressor piston. If the oil water separator is not used, the water and oil enter the air tool with air, which will cause the blade to block, when the tool is started, the blade will not be stretched, and it may not even be able to start. If it can be started, the twisting will be insufficient. Be sure to pay attention to regular filling to keep the tool in normal turning. 1) we accept Alipay, West Union, TT. All major credit cards are accepted through the payment processor's secure escrow. 2) Payment must be made within 3 days of placing the order. 3) If you can't check out immediately after the auction ends, please wait a few minutes and try again, payments should be completed within 3 days. About Shipping 1.