Features tracking angle selector knob. ( S is for single and the M for multiplay), factory Dual hardware kit and clear plastic Dual adjustment gauge. All comes in factory Dual box.  If used on a Dual table (such as the 1219) that has the single / multiplay switch, you should keep this switch on Single so as not to introduce too much tracking angle.

(DUAL service part number 243 168) which CAN also replace the TK-24 (236 242) and the TK-14 (215 430) type sled as well as the TK15. May also be called a cartridge carrier, cartridge shoe, sled, bracket, halterung etc) found in (or can substitute for the TK-14 originally fitted in) the following DUAL (United Audio) models:

DUAL 461 Turntable/Record Player
DUAL 481 Turntable/Record Player
DUAL 491 Turntable/Record Player
DUAL 501 Turntable/Record Player
DUAL 502 & CS 502 Turntable/Record Player
DUAL 504 & CS 504 Turntable/Record Player
DUAL 510 & CS 510 Turntable/Record Player
DUAL 521 & CS 521 Turntable/Record Player
DUAL 601 & CS 601 Turntable/Record Player
DUAL 604 & CS 604 Turntable/Record Player
DUAL 621 & CS 621 Turntable/Record Player
DUAL 701 & CS 701 Turntable/Record Player
DUAL 704 & CS 704 Turntable/Record Player
DUAL 714 & CS 714 Turntable/Record Player (Except Dual 714 Q)
DUAL 721 & CS 721 Turntable/Record Player
DUAL 731 & CS 731 Turntable/Record Player (Except Dual 731 Q)
DUAL 1209 Turntable/Record Player
DUAL 1210 Turntable/Record Player
DUAL 1211 Turntable/Record Player
DUAL 1212 Turntable/Record Player
DUAL 1214 Turntable/Record Player
DUAL 1215 Turntable/Record Player
DUAL 1215S Turntable/Record Player
DUAL 1216 Turntable/Record Player
DUAL 1218 Turntable/Record Player
DUAL 1219 Turntable/Record Player
DUAL 1220 Turntable/Record Player
DUAL 1222 Turntable/Record Player
DUAL 1224 Turntable/Record Player
DUAL 1225 Turntable/Record Player
DUAL 1226 Turntable/Record Player
DUAL 1228 Turntable/Record Player
DUAL 1229 Turntable/Record Player (originally fitted with the TK-14)
DUAL 1229Q Turntable/Record Player
DUAL 1234 Turntable/Record Player
DUAL 1234A Turntable/Record Player
DUAL 1235 Turntable/Record Player
DUAL 1236 Turntable/Record Player
DUAL 1237 Turntable/Record Player
DUAL 1239 Turntable/Record Player
DUAL 1241 Turntable/Record Player
DUAL 1242 Turntable/Record Player
DUAL 1245 Turntable/Record Player
DUAL 1246 Turntable/Record Player
DUAL 1249 Turntable/Record Player