description tool-less blade guide system retrofit kit these innovative, patent-pending guides make the setting of their precision ball bearing guides a fast & easy process ??no wrenches are needed! setting the guides takes just seconds. with just a turn of the large knobs, the bearings are freed of their previous positions. internal springs that push on the rear bearing mounting posts will automatically force the bearings safely away from the bandsaw blade. then, by pushing on the guides??rear posts or even using the knobs themselves, the bearings can be moved into your desired spot next to the blade and secured in position by a twist of the same knobs. the simplicity of this blade guide system is a feature that every woodworker will appreciate! the ball bearing guides are favored over ceramic guides as they reduce heat building friction, increase blade life and contribute to the smooth operation of the machine during cuts. california proposition 65 warning. features patent-pending guides make the setting of their precision ball bearing guides a fast & easy process internal springs that push on the rear bearing mounting posts will automatically force the bearings safely away from the bandsaw blade no wrenches are needed for use with 10-324, 10-325, 10-326 specifications acme tools brand name rikon acme tools part number 10-900r application tool-less blade guide system retrofit kit system assembled weight (lbs) 6.0 attachment method tool-less california proposition 65 warning required no color yellow color / finish yellow and black compatible with 10-324 and 10-325 country of origin china csa certified no etl listed no globaltradeitemnumber (gtin) 00814463012940 height (in) 4.38 internal supplier part # 10-900 internet product code (ipc) 1e772a90c71 length (in) 17.13 manufacturer warranty 1 material metal package contents upper tool-less guide set, lower tool-less guide set, guard package weight 6.8 package weight (lbs) 6.8 set / individual individual ul listed exempt upc 814463012940 weight (lbs) 6.0 width (in) 7.63