3M 87449 Silver Depressed Center Grinding Wheel, T27 Quick Change, 9 in x 1/4 in x 5/8-11 Center Hub Thread, 7010409732, 20 per case 
Dynabrade 51630 .1 hp Straight-Line Extension Pencil Grinder, Central Vacuum, 1/8" Collet 
Air Turbine Tools 200SV – 1/8″ Straight Hand Tool Series, 50,000 RPM, 32060
$575.00
If you like an inkpot shape the super ergonomic 200SV Series is the tool for you. The 200SV delivers power at 0.20 hp (0.15 kW) at governed 50,000 rpm. That’s the difference. Governed high speed stays high when you cut. You will increase your productivity and improve finish quality, remember coated cutting tools only work well at high speed. Compact and easy to grip the 200SV weighs only 5.4 oz (0.15 kg). Low vibration magnitude of 1.67 m/s_ r.m.s makes non-stop work easy with reduced hand-arm stress. Only a light hand is needed to guide this 50,000 rpm tool as speed does the cutting. Our patented automatic brake option stops the 200SV in seconds.
The 200SV weighs only 5.4 oz /0.15 kg with a power rating of 0.3 hp / 0.22 kW. Maintaining a constant speed at 50,000 rpm under variable load, the 200SV delivers greater accuracy and a faster cleaner finish with the lowest vibration available – under 2,2mm/s_ – running under 67 dBa noise level.
The 200SV is rugged and a completely oil free precision tool with no vanes to repair or lubricate. No maintenance is required – just clean, dry air supply. Air Turbine Tools give you lower operating costs, including less repairs, up to 30% savings on compressed air usage and longer cutting tool life. The 200SV is a quality precision tool.
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