Light Weight Power Knob for Shimano TRANX 300 & 400 Reels. Direct Replacement - No Drilling Needed. 47mm - 1.85" Round Aluminum Knob - Includes 2 Ball Bearing. Handle Blank is NOT Included & NOT Needed. Attaching the Knob to the Handle Spindle:Proper Installation Requires the Use of Loctite BLUE 242. Prior to the installation of the knob, the original knob must be removed from the reel handle. The removal of the original knob as well as the installation of the new knob requires the simple use of only a Phillips screw driver and Loctite 242 Blue, nothing more. If Needed, Additional Installation Notes Are Available Upon Request Sales Tax: CA Residents Pay Sales Tax.