Never heard of them, just done a bit of Googling looks like they are just another brand who import an assortment of stuff but just source it from other manufacturers like most people do.
all of our products come with a guarantee. Hand tools are guaranteed for a lifetime and power tools are guaranteed for 3 years. To activate your guarantee you must register your product on the Silverline website within 30 days of purchaseDisposable builders tools like Silverline.