F1L - PEN. Large Sharp Razertip Fixed Tip Pen - standard.
F1M - PEN. Medium Sharp Razertip Fixed Tip Pen - standard.
F1S - Pen. Small Sharp Razertip Fixed Tip Pen - standard.
F1XS - Pen. Extra Small Sharp Razertip Fixed Tip Pen - standard.
HD1L - PEN. Large Sharp Razertip Fixed Tip Pen - heavy duty.
HD1M - PEN. Medium Sharp Razertip Fixed Tip Pen - heavy duty.
HD1S - PEN. Small Straight Sharp Razertip Fixed Tip Pen - heavy duty.
HD1S-L - Pen. Small Long Sharp Razertip Fixed Tip Pen - Heavy Duty
T1L Large Sharp Razertip Tip - standard
T1M - Medium Straight Sharp Razertip Tip - Standard
T1S Small Sharp Razertip Tip - standard
TH1L Large Sharp Razertip Tip - heavy duty.
TH1M - Medium Straight Sharp Razertip Tip - Heavy Duty
TH1S Small Sharp Razertip Tip - heavy duty
TH1S-L - Small Long Razertip Sharp Tip - Heavy Duty