Cobra IM-1 Putter. Soft Feel, Superior Alignment! New Cobra IM putters give you a soft, yet solid feel at impact and a tungsten weight insert generates a high moment of inertia for greater accuracy and distance control. Patent pending Inner-Mallet design delivers visual attention against smaller mallet for superior alignment and greater confidence at address. The IM-1 has the following features :Face: 100% forged 6000 series aluminum with milled face for soft feel and improved