4486 Ketyless Chuck,1/32” to 1/8” Shank Rotary Tool Accessories,Compatible for Dremel 4486 Model 395 3000 4000 4300 8220 3000 7300 Multipro - - Amazon.com
Dremel 12V Li-Ion 2Amp Variable Speed Cordless Rotary Tool Kit w/Rotary Keyless Multi-Chuck 1/32 in. to 1/8 in. Accessory Shank 8240-5+4486 - The Home Depot