P Core ferrite adjuster part number 64-4835-66 made by Neosid 8pcs £5.00
P core adjuster made by Neosid part number 64-4835-66
This will suit their P21x14mm cores though may fit others and also other manufacturers cores that conform to IEC standards
the AL value shows 296/473/739 this maybe because the P core is available in different materials
8pcs £5.00