Continue shopping “PTT-101B ELECTRON VACUUM TUBE VALVE RTC” has been added to your cart. Product Price Quantity Subtotal × PTT-101B ELECTRON VACUUM TUBE VALVE RTC $37.93 PTT-101B ELECTRON VACUUM TUBE VALVE RTC quantity $37.93 Coupon: Apply coupon Update cart Cart totals Subtotal $37.93 Total $37.93 Proceed to checkout