SPK is a set of noise suppression tools consisting of: ST2: Universal double support with 5/8" thread. SSM-1: Mechanical noise suppressor support. SPF: Pop filter for hard phonetic impact sounds. When combined together, the individual functions of the units included in this kit form a powerful studio and stage tool. The mounting options are endless, limited only by your imagination and creativity. Due to the great variety of microphone types and sizes on the marketplace, this kit uses 5/8" thread size that is universal for audio transducer equipment attachments. SPK spkUS List price: $219.95LVPA: $139.99 ANC Replacement mounting rings for SSM1 and SSM1/SL ANC ancUS List price: $22.95LVPA: $14.99 PF PF pfUS List price: $17.95LVPA: $11.99 Las Vegas Pro Audio does not ship internationally Las Vegas Pro Audio 7340 Smoke Ranch Road Suite A Las Vegas, NV 89128 Phone: 702.307.2700 sales@lasvegasproaudio.com