15 brand new in display packets

Diamond Stylus Ref 389D compatible with Sanyo ST111/Crosley NS1 (33/45 rpm speed only) as fitted to cartridges on Crosley turntable/record player systems below:
Cartridge Numbers: NS1
Record Player Models: CR72 Mission Stack-O-Matic, CR83 Arlington Stack-O-Matic, CR84 Varsity Stack-O-Matic, CR85 Colliegate Stack-O-Matic, CR86 Bandmaster Stack-O-Matic, CR87S Queen Anne Console Stack-O-Matic, CR89 Stack-O-Matic
Stylus Profile: Spherical Diamond, Tracking Force: 3 to 5 grams, Colour: Red 

compatible with other brands I believe...

Made of high-grade ABS plastic composites, the Stack-O-Matic needle replacements feature a built-in needle protector and easy installation. The NS1 Stack-O-Matic replacement needle allows you to play 33 1 / 3, 45 and 78 RPM records and is compatible with Crosley Stack-O-Matic record changers. 

Please note: the NS1 is not for use with 1st generation Crosley Stack-O-Matic record changers, 2nd generation CR248 Songwriter CD Recorder, CD recorders or USB products.