Types of Plastic Bobbin - 
 
Brother - This plastic bobbin suits most models of Brother machines with a drop in bobbin. 9.2mm high. Product code: H120.28
 
Brother/Singer/Bernette - Vertical Load, this plastic bobbin suits Bernette, Brother and Singer machines with a vertical front loading a bobbin case. Also for later models using drop in bobbins. 11.5mm high. Product code: H120.23
 
Husqvarna - This plastic bobbin suits Husqvarna / Viking machines made before 1990. 8.8mm high. Product code: H120.16
 
Husqvarna/Viking/Pfaff - This plastic coloured bobbin suits Husqvarna/Viking/Pfaff machines requiring blue/green bobbins. 10.5mm high. Product code: H120.21
 
Husqvarna / Viking Concave - This plastic bobbin suits Husqvarna / Viking machines made before 1990. 8.8mm high. Product code: H120.20
 
Janome - Plastic bobbin for both front loading and drop in machines. Suits Janome, New Home and some Elna machines. Does not fit Swiss made Elna machines. 11.5mm high. Product code: H120.04
 
Pfaff - This plastic bobbin suits most models of Pfaff machines. 8.7mm high. Product code: H120.17
 
Singer - Class 66k plastic bobbin which can be used on machines originally supplied with a metal bobbin. Suits early Singer machines with a domed, narrow drop in bobbin case. 10.8mm high. Product code: H120.14
 
Singer "Auto Wind" - This plastic bobbin suits Singer 600/700 series machines. 7mm high. Product code: H120.15
 
Standard - Universal/Class 15K, standard plastic bobbin to suit all front loading 15K type bobbin cases. Can be used on machines originally supplied with a metal bobbin. 11.8mm high. Product code: H120.13