Hi Nathan (& Ray and All) ~ The Handles are sometimes called "Bicycle Bar Ends" (7/8"o.d.) on eBay , I'm going out to Finish Epoxying the Cap on the Grip in 5 minutes. Ck Pic on Bare one. I'll upload Pic of Grip on it when I get back in from Shop. I would be Glad to help You Configure a simple Straight Shaf (This one was a Mop Handle My Gal was ready to Toss out ~ 1 length of Aluminum : ) . I only Drill the Holes I need for Pre-Determined Length (just me) I'll Post the completed Finny by 9opm Tonite - as I'm Leaving in the Morning to go Camping to the Quartz/Gold spot for 3 days (Central Oregon) So I've got to get Finny ready to Roll.