The NGK BP7HS spark plug is a medium heat, projected firing tip, “short-reach” unit that works especially well on the Genuine Buddy 50 and other Genuine Scooter Company 50cc models.Description The NGK BP7HS spark plug is a medium heat, projected firing tip, “short-reach” unit that works especially well on the Genuine Buddy 50 and other Genuine Scooter Company 50cc models. ? WARNING California Residents: Proposition 65 Warning Specifications Name: NGK BP7HSThread: 14 mmReach: 1/2″ (12.7 mm)Heat: 7 (medium)