Sled Ring Kit Sled Ring Kit Maslow/M2 CNC Universal Ring Kit Component by MakerMade Ring and bearing kit that ensures smooth and accurate cuts on your Maslow CNC. Includes: Sled ring 4 ring bearings 3 L-brackets 2 carriage brackets. All MakerMade’s CNC Maslow kits come with a ring kit included. Use promo code MASLOW10 for 10% off your order! Head over to MakerMade to order!