1/4 inch shaft, gray color, chrome skirt, 330 degree rotation, 0 to 10 calibration (each 30 degrees). $1 each plus shipping.. PayPal "Friends and Family" direct transfer okay/NO credit cards. 73 de Mac, K2GKK/5 (Since 30 Nov '53) Oklahoma City, OK USAF Retired 61-81 FAA Retired 94-10