100/16 Reg Round Point - GrozBeckert

Groz-Beckert Needles have been designed for high-speed embroidery machines. The DBxK5 needle has a larger eye-opening and helps reduce thread breaks. The Groz-Beckert chrome needle is an excellent all-purpose workhorse. Available in both light ballpoint and sharp point styles with a round shaft.

These needles have round shafts. They'll work in home machines if that machine can accept round shaft needles. Just rotate the 'scarf' to the correct position.

On Groz-Beckert packages... 

R - Regular, round point - Shirts, trousers, various types of garments

RG - Round point with small ballpoint - Shirts, trousers, various types of garments

FFG/SES - Light Ball Point - T-shirts, underwear, fine sweaters 

FG - Medium ballpoint - Sweaters, lace, underwear, Schiflli embroidery