TapeTech QB6033-5 QuickBox QSX Exterior Seaming Blades (Yellow) (5-Pack)
TapeTech QB6033-5 QuickBox QSX Exterior Seaming Blades (Yellow) (5-Pack)
$34.99
Check on amazon

TapeTech 6.5" QSX Exterior Seaming Blades 5pk QB6033-5