NOTES: Handle Blank is NOT Included. These knobs can be used with both conventional and spinning reels. However, extra care should be used when considering use with small spinning reels as the handle blank must have enough "meat" to support the knob's pin. Please keep in mind that the Power Knob must be attached to your existing reel handle. A handle blank is NOT included in this purchase. However, if you prefer to purchase a complete Power Handle assembly, I have handle blanks for many of the most popular reels. I am offering these complete handles on eCRATER. 1. All Knobs (except molded plastic) are made with 6061 Aluminum. 2. Molded Plastic Knob has a 9 degree off-set; bearing is NOT included. 3. All Round Knobs do NOT contain ball bearings. 4. All Aluminum T-Bars have an 18 degree off-set and contain a ball bearing in the stem.Mounting Screws May Be LEFT HANDED! If Needed, Installation Notes Available Upon Request Sales Tax: CA Residents Add Sales Tax. Local Pickup: Local pick-up can be arranged. Payment: Payment is by PayPal only. Please make your payment without receiving an invoice as the shipping process is keyed on and commences with the receipt of your PayPal payment. If you purchase several items, you may request an invoice prior to payment. Feedback: Feedback will gladly be left upon receipt of your feedback.