I bought this to replace the main drive belt in a Tandberg Series 1600 X. If has worked perfectly and is the correct size for this tape deck. I suspect it will also fit several of the other Tandberg which use a very similar mechanism.

Concord Model 102 Reel to Reel 7” Tape Player/Recorder Concord Electronics Corp. Los Angeles California Made in Japan Serial No. 68088 Transistorized monophonic portable two-speed (7 ½ - 3 ¾ i.p.s) 10 x 2 ½” Oval Speaker Crystal Microphone Frequency response 50 to 10,000 c.p.s at 7 ½ i.p.s. Wow & Flutter 0.3 per cent at same speed ½ Track Mono Tapes - 7 inch Reel Capacity Circa ~1966 - 52 year old unit as of March 2018 Cost $79.95 per Consumers Report magazine 1967 reviews pg.51 (found on internet) Drive Belt from Turntableneedles (March 20, 2018) Round-Belt-Medium-227-Inch_p_252.html Round Belt, Medium 22.7 inch The round cross section is .103 Inch / 2.7mm Thick. The inside Circumference is 22.7 Inch / 57.7cm Part# RBM22.7 $20.00 After locking in on the two measurements that I needed per turntableneedles suggestion , I went to the Round Medium Rubber Drive Belts BY SIZE DESCRIPTION web page of turntableneedles and found the closest “length” match to my needs. I ordered directly from the web page in a few days I had the belt in my hand and it worked great! Note - turntableneedles please add/update the Concord Model 102 belt information to your website to make it easier for your next customer who may have this unit and wants to find/replace this drive belt.

Sweet product and good sales assistance