Review on Stan's NoTubes Core Remover Tool - Perfect for Presta and Schrader Valve Maintenance by Mike Roe

Got it for less than $2 (coupons and PayPal dollars) so 5 stars for value. The tool just works and is worth speeding up the process and adding sealant without tearing the tire. The right size for a good grip. I don't take it on trips as the sealant is already in the tire so it's a workshop tool at best unless you're doing epic multi-day rides. Easy to use and functional no problems at all. Took me less than 10 seconds to remove the valve core so it does what it says on the tin.